This document provides an overview of functional JavaScript concepts including: type system, primitive values, objects, inheritance, functions, closures, pure functions, higher order functions, composition, currying/partial application, and functional techniques like filter, map and reduce. It recommends resources for learning more about functional programming in JavaScript like libraries, books, and workshops.
INTRODUCTION
COMPARISON BETWEEN NORMAL FUNCTION AND INLINE FUNCTION
PROS AND CONS
WHY WHEN AND HOW TO USED?
GENERAL STRUCTURE OF INLINE FUNCTION
EXAMPLE WITH PROGRAM CODE
In this session we will go over the fundamentals of functional programming and see how functional programming can help make our code more reusable, stable, scalable and fun.
INTRODUCTION
COMPARISON BETWEEN NORMAL FUNCTION AND INLINE FUNCTION
PROS AND CONS
WHY WHEN AND HOW TO USED?
GENERAL STRUCTURE OF INLINE FUNCTION
EXAMPLE WITH PROGRAM CODE
In this session we will go over the fundamentals of functional programming and see how functional programming can help make our code more reusable, stable, scalable and fun.
What is "functional programming", "pure function", "functional language", "lambda function" and "higher-order function" and how these concepts work in modern programming?
Watch the video lesson from Svetlin Nakov and learn more at:
https://softuni.org/dev-concepts/what-is-functional-programming
This is a whirlwind tour of the FP land and is primarily meant for developers wanting to embark on their functional programming journey. Java is used to understand most of the concepts, however, where it falls short to explain certain concepts such as lazy evaluation, currying and partial function application, de-structuring and pattern-matching, Scala or Groovy or Clojure or even Haskell are used to demonstrate it.
Functional programming with Ruby - can make you look smartChen Fisher
Functional programming can make you look smart and others feel stupid. Learn how with Ruby
code can be found here:
https://github.com/chenfisher/functional-programming-with-ruby
Youtube:
https://www.youtube.com/watch?v=Qzoh8w4OPtU
Functional programming and ruby in functional styleNiranjan Sarade
This presentation gives brief introduction to Functional Programming and how we can apply functional style of programming in Ruby language. The mentioned references are of great help to prepare this presentation. Especially video talks of Dr. Venkat Subramaniam. Some slides are from his presentation.
Functional programming (FP) is becoming popular day by day ! The initial learning curve for some of the functional languages like Lisp, Haskell, OCaml, Scala, Scheme, Clojure, etc. .... (there are many) might be high, but once you know the problem context and power of functions, you will work like a boss ! You will be more declarative than imperative !
Ruby is an Object Oriented (OO) language and we love Ruby, isn't it ? But once you understand the importance of FP, you would certainly want to apply FP concepts while writing Ruby code. In fact, you might have used some of those concepts unknowingly. Yes, we are talking about lambda, proc .. but, that's not all. Learn to unleash the power of Ruby in the hands of a functional programmer! You can write wonderful (and working) ruby code with functional style. In this presentation, I will briefly go through FP basics and then jump over to code examples.
Finally, it's all about changing your mindset! No one has stopped you to become a Boss !
What is "functional programming", "pure function", "functional language", "lambda function" and "higher-order function" and how these concepts work in modern programming?
Watch the video lesson from Svetlin Nakov and learn more at:
https://softuni.org/dev-concepts/what-is-functional-programming
This is a whirlwind tour of the FP land and is primarily meant for developers wanting to embark on their functional programming journey. Java is used to understand most of the concepts, however, where it falls short to explain certain concepts such as lazy evaluation, currying and partial function application, de-structuring and pattern-matching, Scala or Groovy or Clojure or even Haskell are used to demonstrate it.
Functional programming with Ruby - can make you look smartChen Fisher
Functional programming can make you look smart and others feel stupid. Learn how with Ruby
code can be found here:
https://github.com/chenfisher/functional-programming-with-ruby
Youtube:
https://www.youtube.com/watch?v=Qzoh8w4OPtU
Functional programming and ruby in functional styleNiranjan Sarade
This presentation gives brief introduction to Functional Programming and how we can apply functional style of programming in Ruby language. The mentioned references are of great help to prepare this presentation. Especially video talks of Dr. Venkat Subramaniam. Some slides are from his presentation.
Functional programming (FP) is becoming popular day by day ! The initial learning curve for some of the functional languages like Lisp, Haskell, OCaml, Scala, Scheme, Clojure, etc. .... (there are many) might be high, but once you know the problem context and power of functions, you will work like a boss ! You will be more declarative than imperative !
Ruby is an Object Oriented (OO) language and we love Ruby, isn't it ? But once you understand the importance of FP, you would certainly want to apply FP concepts while writing Ruby code. In fact, you might have used some of those concepts unknowingly. Yes, we are talking about lambda, proc .. but, that's not all. Learn to unleash the power of Ruby in the hands of a functional programmer! You can write wonderful (and working) ruby code with functional style. In this presentation, I will briefly go through FP basics and then jump over to code examples.
Finally, it's all about changing your mindset! No one has stopped you to become a Boss !
JavaScript language plays a very important role in Web 2.0 application development. JavaScript has its own characteristics different than object-oriented languages and it's not easy for developers to understand.
This presentation covers major advanced topics in JavaScript languages, including prototype chain, identifier resolving, "this" keyword, "new" operator, execution context and scope chain and closure. Besides that, it also covers best practices when using JavaScript.
Discussion on ECMAScript 6 to TypeScript selective features before jump into Angular and brushing your JS programming concepts. Whats new with ECMAScript 6, why ES6 superset - TypeScript adopted by the Angular community and warming up JavaScript philosophy.
LESSON 4: INTRODUCING FUNCTIONS AND MODULAR DESIGN
Learn about Functions in Python. Advantages and disadvantages of functions. Introduction to Modular design. Local and Global Variables and their use. Passing parameters. What are arguments? Big questions: Evolution vs Intelligent design in light of functions (and modular design). A closer look at Robotics and advances in this field. Challenges and tasks including with solutions. Suggested research/HW and YouTube video recommendations. A note on Python’s built in functions.
What's new and changed in PHP 8.
- Major new changes in PHP 8
- New functions and classes
- OOP improvements
- Type system improvements
- Error handling improvements
- Resource to Object migration
- String related changes
- Removed functionality
https://php.watch/versions/8.0
Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
We describe the deployment and use of Globus Compute for remote computation. This content is aimed at researchers who wish to compute on remote resources using a unified programming interface, as well as system administrators who will deploy and operate Globus Compute services on their research computing infrastructure.
A Comprehensive Look at Generative AI in Retail App Testing.pdfkalichargn70th171
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Software Engineering, Software Consulting, Tech Lead.
Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
Spring Transaction, Spring MVC,
Log4j, REST/SOAP WEB-SERVICES.
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Event sourcing, which records state changes as immutable events, provided robust auditing and "time travel" debugging for Wix Stores' microservices. Despite its benefits, the complexity it introduced in state management slowed development. Wix responded by adopting a simpler, unified CRUD model. This talk will explore the challenges of event sourcing and the advantages of Wix's new "CRUD on steroids" approach, which streamlines API integration and domain event management while preserving data integrity and system resilience.
Participants will gain valuable insights into Wix's strategies for ensuring atomicity in database updates and event production, as well as caching, materialization, and performance optimization techniques within a distributed system.
Join us to discover how Wix has mastered the art of balancing simplicity and extensibility, and learn how the re-adoption of the modest CRUD has turbocharged their development velocity, resilience, and scalability in a high-growth environment.
First Steps with Globus Compute Multi-User EndpointsGlobus
In this presentation we will share our experiences around getting started with the Globus Compute multi-user endpoint. Working with the Pharmacology group at the University of Auckland, we have previously written an application using Globus Compute that can offload computationally expensive steps in the researcher's workflows, which they wish to manage from their familiar Windows environments, onto the NeSI (New Zealand eScience Infrastructure) cluster. Some of the challenges we have encountered were that each researcher had to set up and manage their own single-user globus compute endpoint and that the workloads had varying resource requirements (CPUs, memory and wall time) between different runs. We hope that the multi-user endpoint will help to address these challenges and share an update on our progress here.
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Large Language Models and the End of ProgrammingMatt Welsh
Talk by Matt Welsh at Craft Conference 2024 on the impact that Large Language Models will have on the future of software development. In this talk, I discuss the ways in which LLMs will impact the software industry, from replacing human software developers with AI, to replacing conventional software with models that perform reasoning, computation, and problem-solving.
Paketo Buildpacks : la meilleure façon de construire des images OCI? DevopsDa...Anthony Dahanne
Les Buildpacks existent depuis plus de 10 ans ! D’abord, ils étaient utilisés pour détecter et construire une application avant de la déployer sur certains PaaS. Ensuite, nous avons pu créer des images Docker (OCI) avec leur dernière génération, les Cloud Native Buildpacks (CNCF en incubation). Sont-ils une bonne alternative au Dockerfile ? Que sont les buildpacks Paketo ? Quelles communautés les soutiennent et comment ?
Venez le découvrir lors de cette session ignite
TROUBLESHOOTING 9 TYPES OF OUTOFMEMORYERRORTier1 app
Even though at surface level ‘java.lang.OutOfMemoryError’ appears as one single error; underlyingly there are 9 types of OutOfMemoryError. Each type of OutOfMemoryError has different causes, diagnosis approaches and solutions. This session equips you with the knowledge, tools, and techniques needed to troubleshoot and conquer OutOfMemoryError in all its forms, ensuring smoother, more efficient Java applications.
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
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(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
How Recreation Management Software Can Streamline Your Operations.pptxwottaspaceseo
Recreation management software streamlines operations by automating key tasks such as scheduling, registration, and payment processing, reducing manual workload and errors. It provides centralized management of facilities, classes, and events, ensuring efficient resource allocation and facility usage. The software offers user-friendly online portals for easy access to bookings and program information, enhancing customer experience. Real-time reporting and data analytics deliver insights into attendance and preferences, aiding in strategic decision-making. Additionally, effective communication tools keep participants and staff informed with timely updates. Overall, recreation management software enhances efficiency, improves service delivery, and boosts customer satisfaction.
SOCRadar Research Team: Latest Activities of IntelBrokerSOCRadar
The European Union Agency for Law Enforcement Cooperation (Europol) has suffered an alleged data breach after a notorious threat actor claimed to have exfiltrated data from its systems. Infamous data leaker IntelBroker posted on the even more infamous BreachForums hacking forum, saying that Europol suffered a data breach this month.
The alleged breach affected Europol agencies CCSE, EC3, Europol Platform for Experts, Law Enforcement Forum, and SIRIUS. Infiltration of these entities can disrupt ongoing investigations and compromise sensitive intelligence shared among international law enforcement agencies.
However, this is neither the first nor the last activity of IntekBroker. We have compiled for you what happened in the last few days. To track such hacker activities on dark web sources like hacker forums, private Telegram channels, and other hidden platforms where cyber threats often originate, you can check SOCRadar’s Dark Web News.
Stay Informed on Threat Actors’ Activity on the Dark Web with SOCRadar!
Understanding Globus Data Transfers with NetSageGlobus
NetSage is an open privacy-aware network measurement, analysis, and visualization service designed to help end-users visualize and reason about large data transfers. NetSage traditionally has used a combination of passive measurements, including SNMP and flow data, as well as active measurements, mainly perfSONAR, to provide longitudinal network performance data visualization. It has been deployed by dozens of networks world wide, and is supported domestically by the Engagement and Performance Operations Center (EPOC), NSF #2328479. We have recently expanded the NetSage data sources to include logs for Globus data transfers, following the same privacy-preserving approach as for Flow data. Using the logs for the Texas Advanced Computing Center (TACC) as an example, this talk will walk through several different example use cases that NetSage can answer, including: Who is using Globus to share data with my institution, and what kind of performance are they able to achieve? How many transfers has Globus supported for us? Which sites are we sharing the most data with, and how is that changing over time? How is my site using Globus to move data internally, and what kind of performance do we see for those transfers? What percentage of data transfers at my institution used Globus, and how did the overall data transfer performance compare to the Globus users?
OpenFOAM solver for Helmholtz equation, helmholtzFoam / helmholtzBubbleFoamtakuyayamamoto1800
In this slide, we show the simulation example and the way to compile this solver.
In this solver, the Helmholtz equation can be solved by helmholtzFoam. Also, the Helmholtz equation with uniformly dispersed bubbles can be simulated by helmholtzBubbleFoam.
top nidhi software solution freedownloadvrstrong314
This presentation emphasizes the importance of data security and legal compliance for Nidhi companies in India. It highlights how online Nidhi software solutions, like Vector Nidhi Software, offer advanced features tailored to these needs. Key aspects include encryption, access controls, and audit trails to ensure data security. The software complies with regulatory guidelines from the MCA and RBI and adheres to Nidhi Rules, 2014. With customizable, user-friendly interfaces and real-time features, these Nidhi software solutions enhance efficiency, support growth, and provide exceptional member services. The presentation concludes with contact information for further inquiries.
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3. JavaScript Overview – Type System
JavaScript has dynamic and loosely typed type system with two main types:
Primitive (value) types:
number
string
boolean
null
Undefined
Object (reference) types:
Object
Function
Array
Date
RegExp
*Wrappers for primitives: Boolean, Number, String
9. JavaScript Overview - Inheritance
JavaScript supports a prototype-based inheritance.
Inheritance is performed by creating new objects directly, based on existing ones, existing object is assigned as the
prototype of the new object and then inherited behavior can be changed or new behavior can be added to the new
object.
The prototype of an object is a simple reference to another object which has its own prototype reference set to yet
another object
All objects are descended from 'Object' and they inherit properties from Object.prototype, but they may be
overridden
'null', by definition, has no prototype, and acts as the final link in this prototype chain
New objects are created by copying the structure of an existing prototype object
Inheritance in JavaScript
12. JavaScript Overview - Functions
In JavaScript, functions are objects and are used to perform a task or calculates a value.
Functions have properties and methods that they inherit from the Function object. It is possible to add new
properties and methods to functions.
Functions are values that can be bound to names, passed as arguments, returned from other functions
Functions are applied to arguments
The arguments are passed by sharing, which is also called “pass by value”
Function bodies have zero or more expressions
Function application evaluates whatever is returned with the return keyword, or to 'undefined'
Function application creates a scope. Scopes are nested and free variable references are closed over
Variables can shadow variables in an enclosing scope
13. JavaScript Overview - Functions
Function declarations (they are hoisted — moved in their entirety to the beginning of the current scope)
14. JavaScript Overview - Functions
Function object (all functions inherit from it) has the following properties:
arguments: An Array/object containing the arguments passed to the function
arguments.length: Stores the number of arguments in the array
arguments.callee: Pointer to the executing function (allows anonymous functions to recurse)
length: The number of arguments the function was expecting
constructor: function pointer to the constructor function
prototype: allows the creation of prototypes
Function object has the following methods:
apply: A method that lets you more easily pass function arguments
call: Allows you to call a function within a different context
bind: creates a new function that, when called, has its 'this' set to the provided value, with a given sequence of
arguments preceding any provided when the new function is called
toString: Returns the source of the function as a string
16. JavaScript Overview - Closures
Closures are functions that refer to independent (free) variables.
Function defined in the closure 'remembers' the environment in which it was created. A closure, unlike a plain function
pointer, allows a function to access those free variables even when invoked outside its immediate lexical scope.
Simply accessing variables outside of your immediate lexical scope creates a closure
Inner function get full access to all the values defined in the outer function, not the other way around
19. Functional Programming Overview – What is
functional programming?
First Class Functions:
stored in variables, passed as arguments to functions, created within functions and returned from functions
Higher Order Functions:
Function that can accept functions as arguments, and/or can return a function
No Side Effects:
Function that does something other than returning the result is said to have side effects
Referential Transparency:
For a given set of arguments, the same code should always output the same value, only by changing arguments can a
output value be different
Immutability:
Inability for variables to change their values once created. In other words, all things created stay constant
Currying / Partial Application:
Ability of a function to return a new function until it receives all it's arguments. Calling a curried function with only some
of its arguments is called partial application
Tail Call Optimization:
Ability to avoid allocating a new stack frame for a function call. The most common use is tail-recursion, where a recursive
function uses constant stack space.
20. Functional Programming Overview – What Is
functional programming?
"Functional programming isn't the goal. The goal is to simplify the complicated."
Write less code
Fewer errors
Easy concurrency
Testability
22. Functional Programming Overview – Motivating example *
*Hat tip to Brian Lonsdorf, aka @drboolean. Watch his videos, great fun and motivating stuff!
Hey Underscore, You're Doing It Wrong!
Functional programming patterns for the non-mathematician!
25. Functional Programming Techniques
Functional JavaScript
Pure Function, Higher Order Functions
Composition, Combinators
Currying/Partial Application
Filter, Map, Reduce
Try it out yourself...
26. Functional Programming Techniques – Functional
JavaScript
JavaScript allows a variety of different programming paradigms: OO, functional, procedural
Although not a pure functional programming language, it allows one to program in a functional way.
Supports:
First Class Functions
Higher Order Functions
Anonymous functions
Closures
27. Functional Programming Techniques – Functional
JavaScript
JavaScript allows a variety of different programming paradigms: OO, functional, procedural
Although not a pure functional programming language, it allows one to program in a functional way.
Does not support directly, but possible with some discipline :)
Pure functions
Immutability
No Side Effects
28. Functional Programming Techniques – Functional
JavaScript
JavaScript allows a variety of different programming paradigms: OO, functional, procedural
Although not a pure functional programming language, it allows one to program in a functional way.
Does not support directly, but possible with use of libraries or with ES6:
Currying/Partial Application
Tail call optimization
Pattern matching
Lazy Evaluation
29. Functional Programming Techniques – Pure Function
A function is considered pure if the result depends only on the arguments, and it has no side effects
The only result of invoking a pure function is the return value.
Same input, same ouput
No side effects
Can be cached
Easy to test
Allows code to run in parallel
33. Functional Programming Techniques - Combinators
Ability to use functions as building blocks to make new functions
Function composition is simply one of many combinators.
Tacit programming (point-free programming) is a programming paradigm in which a function definition does not include
information regarding its arguments, using combinators and composition in the function declaration instead of arguments
Some Examples*:
splat
get
pluck
*Taken from Reginald Braithwaite's, aka @raganwald, article: Combinator Recipes for Working With Objects in JavaScript
Be sure to check out his projects and books!
37. Functional Programming Techniques - Currying / Partial application
Currying produces a function that will return a new function until it receives all it's arguments
Currying enables Partial Application, and together they help:
Making generic functions
Building new functions by applying arguments
Better granularity of functions
More powerful function composition
38. Functional Programming Techniques – Example: Filter
The filter method transforms an array by applying a predicate function to all of its elements, and building a new array
from the elements for which predicate returned true.
39. Functional Programming Techniques – Example: Map
Map takes a function as an argument, and applies it to each of the elements of the array, then returns the results in a new
array
40. Functional Programming Techniques – Example: Reduce (Fold)
Reduce applies a function against an accumulator and each value of the array (from left-to-right) to reduce it to a single
value